COVER STORY: Teen Mom Amber's Nightmare — Losing Her Baby

In this week’s new issue of OK!: Amber Portwood barely remembers hitting her boyfriend Gary Shirley. After he threatened to call child-protection services on her, she lashed out, smacking him in the face, hitting him repeatedly and nearly shoving him down the stairs of her apartment. But since then, the consequences of her thoughtless acts — which were caught by MTV’s cameras and broadcast on Teen Mom — have haunted Amber.

Law enforcement began an investigation after the episode aired on Sept. 28. “We have an ongoing assessment with regard to the family of Amber Portwood, and we continue to work with law enforcement on this matter,” Anne Holton, of the Anderson, Ind., Department of Child Services, told OK!.

According to reports, Amber and Gary — parents to 23-month-old baby Leah — are expected to be formally interviewed by the police next week. “I’m sure that Amber is freaking out over the possibility she could lose her baby,” says an insider.

FOR MORE EXCLUSIVE DETAILS, PICK UP THE NEW ISSUE OF OK! — ON SALE EVERYWHERE THURSDAY!

ALSO IN THE NEW ISSUE OF OK!:

Khloé Kardashian Odom: From large bags to baggy shirts, check out all the reasons why everyone is saying that the reality star is pregnant. Plus, the proof that Khloe has babies on the brain.

Real Life: The Miners’ crisis in Chile. Learn about the American heroes who raced to their rescue and why they had to do everything they could to help.

Sister Wives: As Kody Brown celebrates his new marriage to wife Robyn, his other wives are not happy. Discover all the reasons why the other women in his life are so upset about this new development.

Mario Lopez: Only in OK!. First photos of Mario’s new baby girl. The new dad talks about how much he is loving his little family. How has baby Gia changed his life? Plus, get a peek inside her beautiful nursery.

Plus:

Courteney Cox and David Arquette announce their separation. Find out why they split; Experts weigh in on the hottest topics of the week from who is to blame for Lindsay Lohan‘s problems to should Kate Gosselin be so close to her bodyguard?; Learn all about Fergie‘s new perfume and what fresh look Kim Kardashian is sporting for fall; How BacheloretteAli Fedotowsky got slim for her wedding to Roberto Martinez; The daily diet of Gossip Girl star Kelly Rutherford; Lasting impressions with Selena Gomez.